ca.live.hk12.crescent.server.service.FileService.java Source code

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Here is the source code for ca.live.hk12.crescent.server.service.FileService.java

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/**
 * You should have received a copy of the GNU General Public License version 3
 * along with this work; Please find the Copyright information and Terms and
 * Conditions in the ClientLauncher.java or ServerLauncher.java file.
 */

package ca.live.hk12.crescent.server.service;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.nio.file.Files;
import java.util.Scanner;

import javax.swing.JOptionPane;

import ca.live.hk12.crescent.ServerLauncher;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

public class FileService {

    //
    // Reading, Writing and Managing Files 
    //
    @Deprecated
    private static int getNumLines(String fileLocation) {
        Scanner sc = null;
        int lines = -1;
        try {
            sc = new Scanner(new FileReader(fileLocation));
            while (sc.hasNext()) {
                sc.nextLine();
                lines++;
            }
        } catch (FileNotFoundException e) {
            JOptionPane.showMessageDialog(null, "File not found : " + fileLocation);
        } finally {
            sc.close();
        }
        return ++lines; //returns -1 if error occurred.
    }

    @Deprecated
    public static String[] readData(String fileLocation) {
        Scanner sc = null;
        String[] data = new String[getNumLines(fileLocation)];
        try {
            sc = new Scanner(new FileReader(fileLocation));
            for (int i = 0; i < data.length; i++) {
                data[i] = sc.nextLine();
            }
        } catch (FileNotFoundException e) {
            JOptionPane.showMessageDialog(null, "File not found : " + fileLocation);
        } finally {
            sc.close();
        }
        return data;
    }

    public static <T> T readData(String fileLocation, Class<T> dataClass) {
        T t = null;
        try (Reader reader = new InputStreamReader(new FileInputStream(fileLocation), "UTF-8")) {
            Gson gson = new GsonBuilder().create();
            t = gson.fromJson(reader, dataClass);
            reader.close();
        } catch (Exception e) {
            if (ServerLauncher.DEBUG)
                throw new ServerException("Unable to read file:<br>" + fileLocation);
        }
        return t;
    }

    public static <T> boolean writeData(String fileLocation, T t) {
        try (Writer writer = new OutputStreamWriter(new FileOutputStream(fileLocation), "UTF-8")) {
            Gson gson = new GsonBuilder().create();
            gson.toJson(t, writer);
            return true;
        } catch (Exception e) {
            throw new ServerException("Could not write to:<br/>" + fileLocation);
        }
    }

    @Deprecated
    public static void writeData(String fileLocation, String data) {
        Writer writer = null;
        try {
            writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileLocation), "utf-8"));
            writer.write(data);
        } catch (IOException ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(null, "`Files` failed to save:\n" + data);
        } finally {
            try {
                writer.close();
            } catch (Exception ex) {
            }
        }
    }

    public boolean renameFile(File oldFile, File newFile) {
        try {
            Files.copy(oldFile.toPath(), newFile.toPath());
        } catch (IOException e) {
            new ServerException("Failed to renameFile: " + oldFile.getName());
            return false;
        }
        return true;
    }

    //
    // Directory methods that should be an enum class... but too lazy T__T 
    //

    /* World */
    public static String getWorldDirectory() {
        return "data/Worlds/";
    }

    public static String getWorldDataLocation(byte worldID) {
        return getWorldDirectory() + worldID + ".dat";
    }

    public static String getWorldInfoLocation(byte worldID) {
        return getWorldDirectory() + worldID + ".info";
    }

    /* Users */
    public static String getUserDBDirectory() {
        return "data/Users/";
    }

    public static String getUserFileLocation(String username) {
        return getUserDBDirectory() + username + ".dat";
    }

    //
    // Making Directories. USELSESSSELSELSELELSLELIJOSEUROILSEJR:LKSEJR I'm tired qq
    //
    public static void makeDirectory(String directory) {
        File file = new File(directory);
        try {
            file.mkdirs();
        } catch (Exception e) {
            throw new ServerException("Unable to make directory: " + directory);
        }
    }

    public static String getCurrentPlayerIDFileLocation() {
        return getUserDBDirectory() + "playerID.count";
    }

}